/Engine/Plugins/Online/OnlineSubsystem/Source/Public/OnlineNotification.h
Notification object, used to send messages between systems
struct FOnlineNotification
FString
ClientRequestIdStr
String representing the client_request_id for this notification.
FUniqueNetIdPtr
FromUserId
User who sent the notification, optional.
TSharedPtr<FJs...
Payload
The payload of this notification
FUniqueNetIdPtr
ToUserId
User to deliver the notification to. Can be null for system notifications.
FString
TypeStr
A string defining the type of this notification, used to determine how to parse the payload